In this article we take a look at the twelfth-generation Chevrolet Suburban and fifth-generation Tahoe (GMT1YC), available from 2021 to present. Here you will find the Chevrolet Suburban / Tahoe 2021 and 2022 fuse box diagrams, get information on the location of the fuse boxes in the vehicle and learn about the assignment of each fuse (fuse layout) and relay.
Fuse Box Location
Passenger Compartment
The right instrument panel fuse block access door is on the passenger side edge of the instrument panel. Pull off the cover to access the fuse block. A fuse puller is available on the right instrument panel end cap.
Engine Compartment
Lift the cover to access the fuse block.
Luggage Compartment
The rear compartment fuse block is behind the access panel on the left side of the compartment. Pull the panel out by grabbing the finger access slot at the rear edge.
Fuse Box Diagrams
Instrument Panel Fuse Box Diagram
There are relays on the back of the fuse block. To access, press the tabs and remove the fuse block.
Assignment of the fuses in the Instrument Panel Fuse Box
| № | Usage |
|---|---|
| F1 | Right Door |
| F2 | Left Door |
| F3 | Universal Garage Door Opener (UGDO)/ OnStar Hands-free Calling (OHC)/ Camera |
| F4 | Body Control Module 2 |
| F5 | Displays |
| F6 | Front Blower |
| F8 | Left Door Panel |
| F10 | Tilt/ Column Lock |
| F11 | USB/ Data Link Connector (DLC) |
| F12 | Central Gateway Module (CGM)/ Onstar |
| F14 | Right Door Panel |
| F17 | Steering Wheel Control |
| F18 | Active Vibration Module 1 |
| F19 | – |
| F20 | – |
| F21 | – |
| F22 | Heated Whee |
| F23 | – |
| F24 | – |
| F25 | Search Engine Optimization (SEO)/ UPFITTER |
| F26 | USB/ Search Engine Optimization (SEO) Retained Accessory Power (RAP) |
| F27 | Auxiliary Power Outlet (APO)/Retained Accessory Power |
| F28 | Spare |
| F30 | Sensing and Diagnostic Module/ Automatic Occupant Sensing |
| F31 | Body Control Module 3 |
| F32 | Center Stack Module (CSM)/ USB |
| F33 | Body Control Module 4 |
| F34 | Out of Park |
| F40 | – |
| F41 | – |
| F42 | Electric Park Brake Switch |
| F43 | Road Side Equipment |
| F44 | Active Vibration Module 2 |
| F45 | Radio Module |
| F46 | Body Control Module 1A |
| F47 | – |
| F48 | Telematics Control Module |
| F49 | Body Control Module 1 |
| F50 | Driver Monitoring System |
| F51 | – |
| F52 | – |
| F53 | – |
| F54 | Sunroof |
| F55 | Auxiliary Power Outlet 3 |
| F56 | Direct Current/ Direct Current Converter Battery 1 |
| F57 | Direct Current/ Direct Current Converter Battery 2 |
| F58 | Spare |
| F59 | – |
| Circuit Breakers | |
| CB1 | Auxiliary Power Outlet 1 |
| CB2 | Auxiliary Power Outlet 2 |
| Relays | |
| K1 | – |
| K2 | Retain Accessory Power/ Accessory 1 |
| K4 | Retain Accessory Power/ Accessory 2 |
| K5 | – |
Engine Compartment Fuse Box Diagram
Assignment of the fuses in the Engine Compartment Fuse Box
| № | Usage |
|---|---|
| 1 | – |
| 2 | – |
| 3 | – |
| 4 | – |
| 6 | Exterior Lighting Module 7 |
| 7 | Exterior Lighting Module 4 |
| 8 | – |
| 9 | Exterior Lighting Module 5 |
| 10 | Exterior Lighting Module 6 |
| 11 | Spare |
| 12 | – |
| 13 | Washer Front |
| 14 | Washer Rear |
| 15 | Rear Electrical Center 2 |
| 16 | Power Sounder |
| 17 | Spare |
| 19 | DC/AC Inverter |
| 20 | IECR 2 |
| 21 | – |
| 22 | IECL 2 |
| 24 | Electronic Brake Control Module |
| 25 | Rear Electrical Center 1 |
| 26 | Camera Wash |
| 27 | Horn |
| 28 | Headlamp Right |
| 29 | Headlamp Left |
| 30 | Exterior Lighting Module 3 |
| 31 | Exterior Lighting Module 1 |
| 32 | – |
| 33 | Not R/C |
| 34 | – |
| 37 | On Board Diagnostics (OBD) Body |
| 38 | MISC Body |
| 39 | Upfitter |
| 40 | MISC Instrument Panel (IP) |
| 41 | Trailer Parking Lamps |
| 42 | Right Taillamp |
| 44 | Trailer Tow |
| 45 | Secondary Axle Motor |
| 46 | Engine Control Module (ECM) Ignition |
| 47 | OBD Engine |
| 48 | – |
| 49 | Telematics Control Module |
| 50 | A/C Clutch |
| 51 | Transfer Case Control Module |
| 52 | Front Wiper |
| 53 | – |
| 54 | Left Taillamps |
| 55 | Trailer Back-up Lamp |
| 56 | Semi Active Damping System |
| 57 | Spare |
| 58 | Starter Motor |
| 60 | Active Fuel Management 1 |
| 61 | Automatic Lamp Control (ALC) Main |
| 62 | Integrated Chassis Control Module/Canister Vent Solenoid/Diesel Exhaust Fluid |
| 63 | Trailer Brake |
| 65 | Auxiliary Underhood Electrical Center |
| 66 | Left Cool Fan Motor |
| 67 | Active Fuel Management 2 |
| 68 | Automatic Lamp Control (ALC) Motor |
| 69 | Starter Pinion |
| 71 | Cool Fan Motor Lower |
| 72 | Right Cool Fan Motor/ Lower |
| 73 | Left Trailer Stop Turn Lamp |
| 74 | Trailer Interface Module 2 |
| 75 | Diesel Exhaust Fluid Controller |
| 76 | ELEC RNG BDS |
| 78 | Engine Control Module |
| 79 | – |
| 80 | Cabin Cool Pump 17W |
| 81 | Right Trailer Stop Turn Lamp |
| 82 | Trailer Interface Module 1 |
| 83 | Fuel Tank Zone Module |
| 84 | Trailer Battery |
| 85 | Engine |
| 86 | Engine Control Module |
| 87 | Injector B Even |
| 88 | O2 B Sensor |
| 89 | O2 A Sensor |
| 90 | Injector A Odd |
| 91 | Engine Control Module (ECM) Throttle Control |
| 92 | Cool Fan Clutch AERO Shutter |
| Relays | |
| 5 | – |
| 18 | DC/AC Inverter |
| 23 | – |
| 35 | Park Lamp |
| 36 | Run/Crank |
| 43 | Secondary Axle Motor |
| 59 | A/C Clutch |
| 64 | Starter Motor |
| 70 | Starter Pinion |
| 77 | Powertrain |
Rear Compartment Fuse Box Diagram
Assignment of the fuses in the Rear Compartment Fuse Box
| № | Usage |
|---|---|
| F1 | Remote Function Actuator |
| F2 | Wireless Charging Module |
| F3 | Heated Seat Module Row 1 (Battery 1) |
| F4 | Memory Seat Module (MSM) Driver |
| F5 | – |
| F6 | – |
| F7 | Amplifier Auxiliary 2 |
| F8 | – |
| F9 | Search Engine Optimization Upfitter 2 |
| F10 | Motor Seatbelt Passenger |
| F11 | Power Folding Seat Row 2 |
| F12 | GBS |
| F13 | – |
| F14 | – |
| F15 | Heated Seat Module Row 1 (Battery 2) |
| F16 | Right Hand Cinch Latch |
| F17 | Memory Seat Module Passenger |
| F18 | Rear Wiper |
| F19 | Motor Seatbelt Driver |
| F20 | Rear Defogger |
| F21 | – |
| F22 | Rear HVAC Display Control |
| F23 | External Object Calculation Module |
| F24 | Amplifier Auxiliary 3 |
| F25 | OBS DET |
| F26 | Rear Drive Control Module |
| F27 | Amplifier Auxiliary 1 |
| F28 | Video Processing Module |
| F29 | – |
| F30 | – |
| F31 | Amplifier |
| F32 | – |
| F33 | Integrated Chassis Control Module |
| F34 | Heated Seat Module Row 2 |
| F35 | HFCR |
| F36 | Exterior Lighting Module |
| F37 | – |
| F38 | Power Slide Console |
| F39 | – |
| F40 | – |
| F41 | – |
| F42 | – |
| F43 | Universal Park Assist |
| F44 | – |
| F45 | Adaptive Forward Lighting/ Automatic Headlamp Leveling |
| F46 | Rear HVAC Blower Motor |
| F47 | Left Hand Cinch Latch |
| F48 | Power Seat Recline Module |
| F49 | Lift Glass |
| F50 | Driver Power Seat |
| F51 | Power Liftgate Module |
| F52 | Passenger Power Seat |
| Relays | |
| K53 | – |
| K54 | – |
| K55 | L/GLASS |
